+++ /dev/null
-//-----------------------------------------------------------------------------
-// Merlok - June 2011
-// Roel - Dec 2009
-// Unknown author
-//
-// This code is licensed to you under the terms of the GNU GPL, version 2 or,
-// at your option, any later version. See the LICENSE.txt file for the text of
-// the license.
-//-----------------------------------------------------------------------------
-// MIFARE Darkside hack
-//-----------------------------------------------------------------------------
-
-#define __STDC_FORMAT_MACROS
-#include <inttypes.h>
-#define llx PRIx64
-
-#include "nonce2key.h"
-#include "ui.h"
-
-int nonce2key(uint32_t uid, uint32_t nt, uint64_t par_info, uint64_t ks_info, uint64_t * key) {
- struct Crypto1State *state, *state_s;
- uint32_t pos, nr, rr, nr_diff;//, ks1, ks2;
- byte_t bt, i, ks3x[8], par[8][8];
- uint64_t key_recovered;
- nr = rr = 0;
-
- // Reset the last three significant bits of the reader nonce
- nr &= 0xffffff1f;
-
- PrintAndLog("\nuid(%08x) nt(%08x) par(%016"llx") ks(%016"llx")\n\n",uid,nt,par_info,ks_info);
-
- for (pos=0; pos<8; pos++)
- {
- ks3x[7-pos] = (ks_info >> (pos*8)) & 0x0f;
- bt = (par_info >> (pos*8)) & 0xff;
- for (i=0; i<8; i++)
- {
- par[7-pos][i] = (bt >> i) & 0x01;
- }
- }
-
- printf("|diff|{nr} |ks3|ks3^5|parity |\n");
- printf("+----+--------+---+-----+---------------+\n");
- for (i=0; i<8; i++)
- {
- nr_diff = nr | i << 5;
- printf("| %02x |%08x|",i << 5, nr_diff);
- printf(" %01x | %01x |",ks3x[i], ks3x[i]^5);
- for (pos=0; pos<7; pos++) printf("%01x,", par[i][pos]);
- printf("%01x|\n", par[i][7]);
- }
-
- state = lfsr_common_prefix(nr, rr, ks3x, par);
- state_s = 0;
- for (i = 0; (state) && ((state + i)->odd != 0 || (state + i)->even != 0) && (i < 10); i++)
- {
- printf("%08x|%08x\n",(state+i)->odd, (state+i)->even);
- state_s = state + i;
- }
- if (!state_s) return 1;
-
- lfsr_rollback_word(state_s, uid^nt, 0);
- crypto1_get_lfsr(state_s, &key_recovered);
- if (!state) free(state);
-
- *key = key_recovered;
-
- return 0;
-}